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  1. #1
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    Default Softail rear brake on 4-speed rigid help?

    I'm running a disc rear brake on my 4-speed rigid Shovel project.

    I recently was told that running a bolt through the caliper and using it as a stay won't work under braking--the bolt will bend. I was told I'll need to weld a tab on the frame to hold the caliper in place.

    Have any of you done this? Can you post up pics of how you did it?

    I have the caliper mounted and the wheel centered/chain aligned. Fitment isn't a problem. Securing the caliper against rotation forces is what I'm facing.

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    Quote Originally Posted by jbswear View Post
    Have any of you done this? Can you post up pics of how you did it?
    Sure we have...... Every caliper has a stop...........

    Better yet you need to post a pic of what you are working with so we don't have to guess......

  3. #3

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    Something like this would work: https://www.billetproofdesign.com/bi...r-made-in-usa/

    Not sure if a stock HD caliper will work with that bracket though, I'm using one from SpeedKing Racing that's steel and looks a bit different running two rear calipers on my build, with 2 PM calipers.

    Jake

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    If you are using a 2000 and up brake caliper then look for the weld on bracket.
    There use to be a bunch online for sale but I dont see them much anymore. They are notched to fit the frame.
    Caliper cut out rides on the newly welded in piece. Super simple and easy to install. Finding one is the hard part

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  6. #6
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    Sorry gents. Tried to upload a pic earlier on my phone. Wouldn't work.

    Click image for larger version. 

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    That's what I'm running.

    If the item linked above is what I need I'll order it.

    Thanks!

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    Quote Originally Posted by Tattooo View Post
    If?????? That's what I'm talking about............ He needs to do some home work so we can help him...........
    Dude, I've been doing homework on this thing for years. With the help of others I've built a bike from scratch. "Homework" is asking questions. Then somebody says, hey, we need "xxx" information to help.

    Then I provide that information.



    And progress continues.
    Last edited by jbswear; 08-10-2019 at 6:36 PM.

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    I used a 2003 softail caliper on my hardtail. What I did was just fit it on the axle in the frame and then made a L-shaped piece mimicing the anchor that is on the softail swingarms and welded it in place using the caliper as a guide to get the location right.
    Just have a look at how the stop is on the softails and make one like it.

  9. #9
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    Quote Originally Posted by jbswear View Post
    Dude, I've been doing homework on this thing for years. With the help of others I've built a bike from scratch. "Homework" is asking questions. Then somebody says, hey, we need "xxx" information to help.

    Then I provide that information.



    And progress continues.
    Yes you are correct.......

    How many years you been building the bike???? How about posting a pic of your project???
    Last edited by Tattooo; 4 Weeks Ago at 10:40 AM.

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    If you have access to a proper welding machine and what goes with it you can save money and easily make your own bracket from suitable flat bar. This is a job for a decent MIG machine though if you have a cheap FCAW box you can prep the parts and tack them for welding elsewhere.

    An aftermarket bracket may or may not match your SPECIFIC use case. Not every similar frame tube is the same distance from centerline! Cardboard is a great way to make patterns you can know will work. Check out your local metal supplier rather than hardware stores. Steel is cheap and most have plenty of cutoff pieces for small money.

    Every experienced wrench has been bitten by "simple" appearing jobs. I'd completely install the rear wheel before tacking whatever bracket you use.

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    Yeah man, that's the plan. If somebody will let me know that bracket above will work for my application, I'll order it. If it needs some massaging to make it fit, I'll do that.

    I have a crappy little 110V welder, which will be enough to tack this into place and then take it to a professional. I can't justify the purchase of a 220V machine right now.

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    If you want to wing it you could order the bracket and modify if needed. Pic of the installed rear wheel with new caliper in position would help.

    Have you shown your welder this thread? If not, I would because if he's a pro he could EASILY make a totally correct part on the spot. That's pure win.

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    Great build thread ya got there.
    Click image for larger version. 

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    A bracket that bolts tight to the caliper won't bend.
    Looks like you already cut off the slotted tab on your caliper that the above linked weld-on bracket would slide into. I think a slot equal to the axle movement with a 90 degree tab with two round 'cutouts' welded to the inside of the frame would be strong and clean...I can see it but can't describe it well.
    Sometimes I overthink shit; even just a tab like this with a solid spacer would work:
    Click image for larger version. 

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    http://www.bitterendchoppers.com/FrameParts5.html
    Last edited by TriNortchopz; 08-11-2019 at 12:37 AM. Reason: no

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    Essential u just need a good 1/4" piece of plate steel welded to the frame. It's really nothing special. Needs to be long enough to catch caliper while axle is in any location in axle plates (full forward or back). You can fill weld or mold it in to make it look nice. On the other hand haifley bros makes a brake tab bracket kit for their sportster kits that I've used. It allows u to adjust the stay for when u move your wheel back or forward for chain tension. I'll send pics of my setup on my rigid shovel and my sportster.

    Link to haifley part
    http://www.haifleybrothers.com/parts...er-and-bracket

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    The bracket i posted will work. Used them before. The link i posted is only the first example i found and the price is dumb. Shop around and you may find something less pricey. It will definitely need some massaging. Wheel and fresh chain must be installed to get location correct.
    Once installed it will blend in like it belongs there unlike some attempts I have seen.

    On a side note, I have used the caliper on a swingarm Shovel. 1/4" angle welded to swingarm.

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    Thanks, gents. I've ordered a replacement caliper that has the mounting tab and a weld-on bracket.

    I'll update when it's installed.

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    Too bad. All you need as stated above is a flat piece welded to frame to fit in the slot on the caliber. My brother has this exact setup for many years/miles no problems. Good luck either way



    Quote Originally Posted by jbswear View Post
    Thanks, gents. I've ordered a replacement caliper that has the mounting tab and a weld-on bracket.

    I'll update when it's installed.

  19. #19
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    All that is needed is a slotted tab like shown above to adapt the tabless caliper. Many models of calipers have been adapted that do not have the softail slot.

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    Some people just like doing things the hard and more expensive way.....

    But that's just fine that's part of building a chopper....... I guess?????????

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